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PG&E Corporation, through its subsidiary, Pacific Gas and Electric Company (Utility), is engaged in the sale and delivery of electricity and natural gas to customers in northern and central California. The Utility owns approximately 170,000 acres of land, including approximately 140,000 acres of watershed lands.
ELECTRIC UTILITY OPERATIONS
Diablo Canyon Power Plant: The Utility's Diablo Canyon power plant consists of two nuclear power reactor units, Units 1 and 2.
Hydroelectric Generation Facilities: The Utility’s hydroelectric system consists of 107 generating units at 67 powerhouses, including the Helms pumped storage facility. Majority of the Utility’s hydroelectric generation units are classified as ‘large’ hydro facilities, as their powerhouse capacity exceeds 30 MW (megawatt). The system includes 98 reservoirs, 73 diversions, 169 dams, 173 miles of canals, 43 miles of flumes, 132 miles of tunnels, 65 miles of pipe (penstocks, siphons and low head pipes), and 4 miles of natural waterways, and approximately 140,000 acres of fee-owned land. The system also includes water rights as specified in 89 permits or licenses and 160 statements of water diversion and use. The Helms pumped storage facility consists of three motor/generator units.
Fossil Fuel-fired Generation Facilities: The Utility’s natural gas-fired generation facilities include the Colusa Generating Station, the Gateway Generating Station, and the Humboldt Bay generating station. In addition, the Utility owns and operates three fuel cell sites in the Bay Area.
Photovoltaic Facilities: The Utility’s operational photovoltaic facilities include the Five Points solar station (15 MW), the Westside solar station (15 MW), the Stroud solar station (20 MW), the Huron solar station (20 MW), the Cantua solar station (20 MW), the Giffen solar station (10 MW), the Gates solar station (20 MW), the West Gates solar station (10 MW), and the Guernsey solar station (20 MW). All of these facilities are located in Fresno County, except for the Guernsey solar station, which is located in Kings County.
Generation Resources from Third Parties
Qualifying Facility (QF) Power Purchase Agreements: QFs primarily include small production facilities whose primary energy sources are co-generation facilities that produce combined heat and power and renewable generation facilities. As of December 31, 2013, the Utility had agreements with 170 QFs that are in operation, which expire at various dates between 2014 and 2028.
Irrigation Districts and Water Agencies: The Utility also has agreements with various irrigation districts and water agencies to purchase hydroelectric power. These agreements require the Utility to make semi-annual fixed minimum payments. These contracts would expire on various dates between 2014 and 2030.
Other Third-Party Power Purchase Agreements: The Utility has various power purchase agreements for renewable and conventional generation resources, including tolling agreements and resource adequacy agreements.
Renewable Generation Resources
Renewable generation resources include bioenergy, such as biogas and biomass, certain (primarily small) hydroelectric facilities and efficiency improvements, wind, solar, and geothermal energy.
Electricity Transmission
As of December 31, 2013, the Utility owned approximately 18,115 circuit miles of interconnected transmission lines operated at voltages of 500 kilovolt (kV) to 60 kV. The Utility also operated 91 electric transmission substations with a capacity of approximately 62,289 megavolt ampere. The Utility’s electric transmission system is interconnected with electric power systems in the Western Interconnection to the Western Electricity Coordinating Council (WECC), which includes various western states, Alberta and British Columbia, Canada, and parts of Mexico.
The Utility acts as its own scheduling coordinator to schedule electricity deliveries to the transmission grid. The Utility also acts as a scheduling coordinator to deliver electricity produced by various governmental entities to the transmission grid under contracts the Utility entered into with these entities. In 2013, the Utili

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